Add support for packageName::typeName
From this forum thread:
There are some inconsistencies between the Hawk EOL dialect and plain EOL, in that we do not support
packageName::typeName, but we do support
packageURI::typeName. It shouldn't be too hard to support this option as well, even if it's slightly less efficient as we do not have a straight index from the package name to the metamodel (package names do not have to be unique).